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Preparation method of binary rare earth oxide graphene compound

A graphene and composite technology, which is applied in the field of preparation of double rare earth oxide graphene composites, can solve problems such as carcinogenicity, aquatic animal and human harm, and achieve the effect of avoiding agglomeration

Inactive Publication Date: 2014-12-17
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic dye wastewater is difficult to be biodegraded after being discharged into the water body, which will cause potential harm to aquatic animals and humans and even cause cancer

Method used

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  • Preparation method of binary rare earth oxide graphene compound
  • Preparation method of binary rare earth oxide graphene compound
  • Preparation method of binary rare earth oxide graphene compound

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Embodiment 1

[0017] The preparation method of the double rare earth oxide graphene composite of the present invention comprises the following steps in turn: (1) Weigh 2 g of graphite powder and 1.5 g of sodium nitrate mixture, add 35 mL of 98% concentrated sulfuric acid, and stir for 2 hours in an ice bath; (2) Under ice bath conditions, add 4g of potassium permanganate to the mixed solution of the above step (1) and stir evenly; (3) place the mixed solution of step (2) in a water bath at 35°C and stir for 2.5 hours; (4) take out the mixed solution of step (3) from the water bath Add 40 mL of deionized water to the mixture, heat to keep boiling and continue to stir for 2.5 hours; (5) Cool the mixture in step (4) to room temperature and add 200 mL of deionized water, then add 100 mL of hydrogen peroxide, and stir Obtain a solid-liquid mixture; (6) wash the solid-liquid mixture obtained in step (5) with 4% hydrochloric acid for 4 times, then wash with deionized water for 4 times, so that the ...

Embodiment 2

[0020]The preparation method of the double rare earth oxide graphene composite of the present invention comprises the following steps in turn: (1) Weigh 2 g of graphite powder and 1.5 g of sodium nitrate mixture, add 35 mL of 98% concentrated sulfuric acid, and stir for 2 hours in an ice bath; (2) Under ice bath conditions, add 4g of potassium permanganate to the mixed solution of the above step (1) and stir evenly; (3) place the mixed solution of step (2) in a water bath at 35°C and stir for 2.5 hours; (4) take out the mixed solution of step (3) from the water bath Add 40 mL of deionized water to the mixture, heat to keep boiling and continue to stir for 2.5 hours; (5) Cool the mixture in step (4) to room temperature and add 200 mL of deionized water, then add 100 mL of hydrogen peroxide, and stir Obtain a solid-liquid mixture; (6) wash the solid-liquid mixture obtained in step (5) with 4% hydrochloric acid for 4 times, then wash with deionized water for 4 times, so that the p...

Embodiment 3

[0023] The preparation method of the double rare earth oxide graphene composite of the present invention comprises the following steps in turn: (1) Weigh 2 g of graphite powder and 1.5 g of sodium nitrate mixture, add 35 mL of 98% concentrated sulfuric acid, and stir for 2 hours in an ice bath; (2) Under ice bath conditions, add 4g of potassium permanganate to the mixed solution of the above step (1) and stir evenly; (3) place the mixed solution of step (2) in a water bath at 35°C and stir for 2.5 hours; (4) take out the mixed solution of step (3) from the water bath Add 40 mL of deionized water to the mixture, heat to keep boiling and continue to stir for 2.5 hours; (5) Cool the mixture in step (4) to room temperature and add 200 mL of deionized water, then add 100 mL of hydrogen peroxide, and stir Obtain a solid-liquid mixture; (6) wash the solid-liquid mixture obtained in step (5) with 4% hydrochloric acid for 4 times, then wash with deionized water for 4 times, so that the ...

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Abstract

The invention relates to a preparation method of a binary rare earth oxide graphene compound. The method comprises the following steps: weighing 2g of graphite powder and 1.0-2.0g of a sodium nitrate mixture, adding concentrated sulfuric acid, stirring, adding potassium permanganate, stirring, adding deionized water to dilute, cooling, adding deionized water and hydrogen peroxide, stirring to obtain a solid-liquid mixture, washing the solid-liquid mixture by hydrochloric acid and deionized water, centrifuging to remove water in order to obtain a graphene oxide solid, drying, and grinding to obtain graphene oxide powder; weighing 12mg of the graphene oxide powder, 500-600mg of yttrium nitrate hexahydrate and 25-60mg of cerium nitrate hexahydrate, uniformly mixing, adding the obtained material to an ethanol solution, continuously adding 0.1-0.5g of polyvinylpyrrolidone, and stirring; transferring the obtained mixture to an autoclave, and reacting; and centrifuging to remove water, cleaning by ethanol and deionized water, and drying the obtained cleaned reaction product to obtain the finished yttrium oxide / cerium oxide / graphene compound. The compound has an excellent photocatalysis performance.

Description

technical field [0001] The invention relates to a preparation method of a double rare earth oxide graphene composite, belonging to the technical field of graphene composites. Background technique [0002] The vigorous development of the textile and food industry has resulted in an increasing amount of wastewater containing organic dyes discharged into the environment, posing a huge threat to the environment. Organic dye wastewater is difficult to be biodegraded after being discharged into water bodies, which will cause potential harm to aquatic animals and humans and even cause cancer. [0003] Photocatalysis is one of the main methods for treating water dyes, and its research hotspots mainly focus on the development and utilization of new photocatalysts. As one of the active rare earth oxides, yttrium oxide has special physical and chemical properties such as high light transmittance and oxygen storage in the visible light region. Current reports show that cerium oxide is...

Claims

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Application Information

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IPC IPC(8): C02F1/30B01J23/10
Inventor 张娅陈鹏王宏归赵彦花温芳芳周颜霞徐赛赛
Owner YANGZHOU UNIV